A business visa for Australia, such as the Business Visitor Stream (subclass 600), allows foreign nationals to visit Australia for short-term business purposes, including attending conferences, meetings, negotiations, or exploring business opportunities. To apply, applicants need to provide documentation detailing their business purpose, such as an invitation letter from an Australian company or proof of scheduled meetings, along with evidence of sufficient funds to support their stay. Additionally, applicants may need to demonstrate ties to their home country to confirm their intent to return after the visit.